Binding post



Match 25, 1924.. 1,487,954-

A. KLEINHESSELINK' BINDING POST Filed March 13, 1925 Patented Mar. 25', 1924.

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BINDING ros'r- Application filed March 13, 1923. Serial No. 624,703.

To all. whom it concern:

Be it lznown that I, ARIE KLEINHESSE- LINK, a citlzen'of the United States, and a resident of Orange City, in the county of.

Sioux, State of Iowa, have invented a certain new and useful Binding Post, of which i the following is a specification.

The object of my invention is to provide a binding post of simple, durable and inexpensive construction, and whereby an electric wire maybe readily, quickly and easily secured to the binding post in such manner that a good electric contact is provided, which cannot be impaired by vibration or agitation applied to the binding post, such for instance as frequently occurs in connection with the use of binding posts now in common use, and in. which there is a set screw or thumb'screw extended through the binding post stem to engage the wire.

More specifically it is my object to pro-'- vide a binding post in which the electric wire may be readily, quickly and easily inserted, and after it is inserted, a permanent contact between it and the binding post proper may be quickly and easily established, and when once established, firmly held in position against displacement or impairment of the contact such as might be caused by shaking or"'rattling the binding post or wire.

My invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims,

and illustrated in the accompanying drawings, in which: I

Figure 1 shows a side elevation of a binding post having an electric conducting wire connected therewith in position for use. Figure 2 shows a longitudinal, sectional view on the line 2-2 of Figure 1.

Figure 3 shows a central, longitudinal, sectional View with the wire omitted and the wire clamping member inits position spaced apart from the opening through which the electric'conductor wire is to be extended.

Figure 4 shows a sectional view on the line 4-4 of Figure 1.

Figure 5 shows a sectional view on the line 55 of Figure 3; and

Figure 6 shows a side elevation of the binding post proper with the spring and sleeve omitted to show the groove therein.

Referring to the accompanying drawings,

I have used the reference numeral 10 to in dicate the insulator body portion of the binding post and 11 the metallic conductor binding post stem. The stem is preferably permanently connected with the body portion 10 by means of a pin 12, and formed in the body portion 10 I preferably provide an annular chamber at 13. The stem of the binding post is provided near its outer end with a transverse opening at 14 to receive an electric conductor wire, and it is also provided with two grooves 15 and 16 on its opposite sides, designed to receive the electric conducting wire after it has been passed through the opening 14. I

The numeral 17 indicates an electric conducting wire, and in Figure 2 I have illustrated the manner in which it is placed in the opening 14 and the grooves 15 and 16.

On one-side of the binding post 11 there is a longitudinal groove 18 arranged in line with the groove 15 and extending toward the insulator body 10. At a pointspaced apart from the insulator body 10, this groove is provided with a right angled ex tension at 19.

Slidably'mounted upon the stem 11 is a metallic conductor sleeve 20, preferably tapered on its interior at 21, the interior di ameter being largest at the end of the sleeve adjacent to the end of the binding post which contains the opening 14. On the interior of this sleeve there is a. lug 22 extended inwardly and designed to enter the groove 18, and connected with the sleeve 20 is an extensible coil spring 23 which encircles the binding post 11 and enters the annular chamber 13. This spring serves the purpose of normally holding the sleeve 20 to its limit of movement away from the body portion 10, as shown in Figures 1 and 2.

In practical operation with my improvement, and assuming that it is desired to make an electric connection, then the sleeve 20 is pushed toward the body portion 10 until the lug 22 reaches the groove 19, then the sleeve is given a partial revolution so that the lug 22 enters the groove 19. This will firmly hold the spring 23 under compression and hold the sleeve 20 to position exposingthe end of the binding post, in which the opening 14 is contained. In this position the operator may very readily, quickly and easily insert an electric conducting wire through the opening 14. Then the operator may bendthe wire on opposite sides of the part that goes through the open- 5 grasps the sleeve 20, giving it a slight rotary movement so that the lug 22 again enters the groove 18, whereupon the spring will force the sleeve outwardly into engagement with the conductor wire. The operator preferably grasps the sleeve 20 and forcibly presses it outwardly relative to the binding post, thus tightly compressing the conductor wireinto the grooves and establishing a firm electric contact between the wire and the binding post. After this has been done, and a good electric contact made, the spring 23 will then hold the sleeve 20 in its position and no amount of'shocks or jars applied to the binding post will tend to release or impair this electric connection, but on the contrary, the contact will be made better as a result of such shocks or jars if any occur.

To remove the electric conductor wire, it is only necessary to slide the sleeve 20 back to position, shown in, Figure 3, whereupon the Wire may be straightened out and removed from the opening. 4

One of the advantages of my invention is that there are no exposed or projecting parts to my binding post that are likely to become caught or entangled, such for instance as the set screws commonly used.

Furthermore, my improved binding post is very cheap and inexpensive in construction, because it has no screw threads or parts that need accurate machined Work.

The advantage of-tapering the interior of the sleeve is that when the sleeve is being moved by the operators hand to position for engaging the conductor wire, the tapered portions thereof act as a wedge to firmly press the wire down into the groove and establish a perfect electric contact.

I claim as my invention:

' 1. A device of the class described, the combination of a binding post stem having an opening extended through it near one end and having grooves on opposite sides of said opening extending longitudinally of the stem toward the end thereof, said stem also having a groove extending from said opening toward the opposite end of the binding post stem and terminating in a lateral extension, a sleeve slidably mounted upon the stem and having its interior tapered and being provided with alug designed to enter said groove, and an extensible coil spring mounted upon the stem anddesigned to engage the said sleeve, substantially as and for the purposes stated.

2. A device of the class described, the combination of a binding post stem having an opening extended through it near one end and having grooves on opposite sides of said opening extending longitudinally of the stem toward the end thereof, said stem also having a roove extending from said opening toward the opposite end of the binding post stem and terminating in a lateral extension, a sleeve slidably mounted upon the stem and being provided with a lug designedto enter said groove, and an extensible coil spring mounted uponthe stem and designed to engage the said sleeve,

substantially as and for the purposes stated. Des Moines, Iowa, February 28, 1923. ARIE KLEINHESSELINK. 

